1.	Simplify 1 Simplify the following expression: $$ \left(4(-2) - -2\times6\right)2(-4)(-4) $$ Correct Answer $$ 128$$ or 128.000

2.	Simplify 2 Simplify the following expression: $$ \frac{{\left(5 - 6\right)}^{2}}{-2 - 5 - -2(-2)} $$ Correct Answer $$ \frac{-1}{11}$$ or -0.0909091

3.	Fractions 1 Simplify the following expression: $$ \frac{-6}{6} - \frac{-4}{5} $$ Correct Answer $$ \frac{-1}{5}$$ or -0.19999999999999996

4.	Fractions 2 Simplify the following expression: $$ \frac{-5}{4}\frac{-3}{5} $$ Correct Answer $$ \frac{3}{4}$$ or 0.75

5.	Significant figures 1. Write the following to 4 significant figures: 0.0024761680 Correct Answer 0.002476 or $$2.476\times10^{-3}$$ 2. Write the following to 4 significant figures: 706.39300 Correct Answer 706.4 or $$7.064\times10^{2}$$

6.	Standard Form 1. Write the following in standard form to 3 significant digits: 0.00721914 Correct Answer $$7.22\times10^{-3}$$ 2. Write the following in standard form to 2 significant digits: 0.00000120330 Correct Answer $$1.2\times10^{-6}$$

7.	Significant figures 1. Write the following in preferred standard form to 2 significant digits: 0.00775 Correct Answer $$7.7\times10^{-3}$$ 2. Write the following in preferred standard form to 2 significant digits: 0.000002281 Correct Answer $$2.3\times10^{-6}$$

8.	Simplify 2 Simplify the following expression: $$ {\left(-3 + 1\right)}^{2} - \frac{6 + 6}{-3 + 1} $$ Correct Answer $$ 10$$ or 10.0000

9.	Simplify 1 Simplify the following expression: $$ 2(-2)2 - \left(5\times3 + 4 - 4\right) $$ Correct Answer $$ -23$$ or -23.0000

10.	Simplify 2 Simplify the following expression: $$ \frac{\frac{5}{-4} + -5 - 6}{2\times2(-3)} $$ Correct Answer $$ \frac{49}{48}$$ or 1.02083